Fulvestrant impurity 58 CAS CATO-C4X-191758
| CAS No. | CATO-C4X-191758 |
| Molecular Formula | C33H49BrO4 |
| Molecular Weight | 589.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Fulvestrant impurity 58.
As a process- or degradation-related impurity, Fulvestrant impurity 58 (CAS CATO-C4X-191758, C33H49BrO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C33H49BrO4, Fulvestrant impurity 58 contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 589.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Fulvestrant impurity 58 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C33H49BrO4 |
| Molecular Weight | 589.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
Related Fulvestrant Standards
- Fulvestrant impurity 37 (CAS CATO-C4X-191737)
- Fulvestrant impurity 45 (CAS CATO-C4X-191745)
- Fulvestrant Impurity 31 (CAS CATO-C4X-191731)
- Fulvestrant impurity 36 (CAS CATO-C4X-191736)
- Fulvestrant EP Impurity E (CAS 2170200-14-1)
- Fulvestrant impurity 53 (CAS CATO-C4X-191753)
- Fulvestrant Impurity 16 (CAS CATO-C4X-191716)
- Fulvestrant Impurity 17 (CAS CATO-C4X-191717)
Recommended Standards
- Tigecycline Impurity 11 (CAS CATO-C4X-186011)
- Orforglipron Impurity 3 (CAS 2212022-55-2)
- 5'-O-Dimethoxytrityl-N4-Benzoyl-cytidine (CAS 41092-41-5)
- Orforglipron impurity 74 (CAS CATO-C4X-323474)
- Dacomitinib Impurity 17 (CAS CATO-C4X-208617)
- Maxacalcitol Impurity 8 (CAS 929721-98-2)
- Teneligliptin Impurity 5 (CAS 1415908-67-6)
- 4-Bromo-2-(tert-butyl)-6-iodooxazolo[4,5-c]pyridine-7-carboxylic acid (CAS 1305325-12-5)
- 2-(Dimethylamino)ethyl methacrylate hydrochloride (CAS 2421-44-5)
- 2-Isoproxy-3-methylpyridine-5-carboxaldehyde (CAS 1289162-33-9)
- Ethyl 1-[cyano-(4-methoxyphenyl)methyl]-piperidine-4-carboxylate hydrochloride (CAS 1440535-74-9)
- 2-[2-(2-Isopropyl-5-methylphenoxy)ethyl]-piperidine hydrochloride (CAS 1219949-42-4)
- Nim811 (CAS 143205-42-9)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com